Minor cleanups:

* Make sure variables are always initialized
* Use lround instead of adding .5 and casting
* Remove some unneeded vars
* Check for null before calling strcmp
* Remove redundant if conditions
* Remove make_TxQ factory function

src/ripple/app/ledger/Ledger.cpp

@@ -499,7 +499,6 @@ Ledger::rawInsert(std::shared_ptr<SLE> const& sle)
     Serializer ss;
     sle->add(ss);
     auto item = std::make_shared<SHAMapItem const>(sle->key(), std::move(ss));
-    // addGiveItem should take ownership
     if (!stateMap_->addGiveItem(std::move(item), false, false))
         LogicError("Ledger::rawInsert: key already exists");
 }
@@ -510,7 +509,7 @@ Ledger::rawReplace(std::shared_ptr<SLE> const& sle)
     Serializer ss;
     sle->add(ss);
     auto item = std::make_shared<SHAMapItem const>(sle->key(), std::move(ss));
-    // updateGiveItem should take ownership
+
     if (!stateMap_->updateGiveItem(std::move(item), false, false))
         LogicError("Ledger::rawReplace: key not found");
 }

src/ripple/app/main/Application.cpp

@@ -588,7 +588,8 @@ public:
         , m_loadManager(
               make_LoadManager(*this, *this, logs_->journal("LoadManager")))
 
-        , txQ_(make_TxQ(setup_TxQ(*config_), logs_->journal("TxQ")))
+        , txQ_(
+              std::make_unique<TxQ>(setup_TxQ(*config_), logs_->journal("TxQ")))
 
         , sweepTimer_(get_io_service())
 
@@ -1877,8 +1878,8 @@ ApplicationImp::fdRequired() const
     // Standard handles, config file, misc I/O etc:
     int needed = 128;
 
-    // 1.5 times the configured peer limit for peer connections:
-    needed += static_cast<int>(0.5 + (1.5 * overlay_->limit()));
+    // 2x the configured peer limit for peer connections:
+    needed += 2 * overlay_->limit();
 
     // the number of fds needed by the backend (internally
     // doubled if online delete is enabled).

src/ripple/app/misc/NetworkOPs.cpp

@@ -81,7 +81,7 @@ class NetworkOPsImp final : public NetworkOPs
         bool const admin;
         bool const local;
         FailHard const failType;
-        bool applied;
+        bool applied = false;
         TER result;
 
         TransactionStatus(

src/ripple/app/misc/TxQ.h

@@ -774,12 +774,6 @@ private:
 TxQ::Setup
 setup_TxQ(Config const&);
 
-/**
-    @ref TxQ object factory.
-*/
-std::unique_ptr<TxQ>
-make_TxQ(TxQ::Setup const&, beast::Journal);
-
 template <class T>
 std::pair<bool, XRPAmount>
 toDrops(FeeLevel<T> const& level, XRPAmount const& baseFee)

src/ripple/app/misc/impl/TxQ.cpp

@@ -1549,10 +1549,4 @@ setup_TxQ(Config const& config)
     return setup;
 }
 
-std::unique_ptr<TxQ>
-make_TxQ(TxQ::Setup const& setup, beast::Journal j)
-{
-    return std::make_unique<TxQ>(setup, j);
-}
-
 }  // namespace ripple

src/ripple/basics/BasicConfig.h

@@ -330,11 +330,10 @@ get(Section const& section,
 inline std::string
 get(Section const& section, std::string const& name, const char* defaultValue)
 {
-    bool found_and_valid = false;
     try
     {
         auto const val = section.get<std::string>(name);
-        if ((found_and_valid = val.is_initialized()))
+        if (val.is_initialized())
             return *val;
     }
     catch (boost::bad_lexical_cast&)

src/ripple/basics/impl/base64.cpp

@@ -190,7 +190,7 @@ decode(void* dest, char const* src, std::size_t len)
 {
     char* out = static_cast<char*>(dest);
     auto in = reinterpret_cast<unsigned char const*>(src);
-    unsigned char c3[3], c4[4];
+    unsigned char c3[3]{}, c4[4]{};
     int i = 0;
     int j = 0;
 

src/ripple/json/impl/json_value.cpp

@@ -132,7 +132,7 @@ Value::CZString::~CZString()
 bool
 Value::CZString::operator<(const CZString& other) const
 {
-    if (cstr_)
+    if (cstr_ && other.cstr_)
         return strcmp(cstr_, other.cstr_) < 0;
 
     return index_ < other.index_;
@@ -141,7 +141,7 @@ Value::CZString::operator<(const CZString& other) const
 bool
 Value::CZString::operator==(const CZString& other) const
 {
-    if (cstr_)
+    if (cstr_ && other.cstr_)
         return strcmp(cstr_, other.cstr_) == 0;
 
     return index_ == other.index_;

src/ripple/protocol/impl/Serializer.cpp

@@ -413,7 +413,7 @@ SerialIter::getFieldID(int& type, int& name)
     {
         // uncommon type
         type = get8();
-        if (type == 0 || type < 16)
+        if (type < 16)
             Throw<std::runtime_error>(
                 "gFID: uncommon type out of range " + std::to_string(type));
     }
@@ -422,7 +422,7 @@ SerialIter::getFieldID(int& type, int& name)
     {
         // uncommon name
         name = get8();
-        if (name == 0 || name < 16)
+        if (name < 16)
             Throw<std::runtime_error>(
                 "gFID: uncommon name out of range " + std::to_string(name));
     }

src/test/app/PayStrand_test.cpp

@@ -531,7 +531,7 @@ struct ExistingElementPool
                 return STAmount{};
             return (*sle)[sfBalance];
         };
-        std::uint64_t totalXRP[2];
+        std::uint64_t totalXRP[2]{};
         for (auto ai1 = accounts.begin(), aie = accounts.end(); ai1 != aie;
              ++ai1)
         {

src/test/nodestore/TestBase.h

@@ -86,23 +86,21 @@ public:
 
         for (int i = 0; i < numObjects; ++i)
         {
-            NodeObjectType type;
-
-            switch (rand_int(rng, 3))
-            {
-                case 0:
-                    type = hotLEDGER;
-                    break;
-                case 1:
-                    type = hotACCOUNT_NODE;
-                    break;
-                case 2:
-                    type = hotTRANSACTION_NODE;
-                    break;
-                case 3:
-                    type = hotUNKNOWN;
-                    break;
-            }
+            NodeObjectType const type = [&] {
+                switch (rand_int(rng, 3))
+                {
+                    case 0:
+                        return hotLEDGER;
+                    case 1:
+                        return hotACCOUNT_NODE;
+                    case 2:
+                        return hotTRANSACTION_NODE;
+                    case 3:
+                        return hotUNKNOWN;
+                }
+                // will never happen, but make static analysys tool happy.
+                return hotUNKNOWN;
+            }();
 
             uint256 hash;
             beast::rngfill(hash.begin(), hash.size(), rng);